Describe the mechanism of water absorption.
Answers
Answer:
The force for absorption of water is created at the leaf end i.e. the transpiration pull. ... The water will enter the plant via the root cells that can be found in the roots where mainly passive absorption occurs. Also, with the absorption of water, minerals and nutrients are also absorbed.
Answer:
(1) The absorption of water takes place by two modes, i.e. active absorption and passive absorption.
(2) Passive absorption is the chief method of absorption (98%).
(3) There is no expenditure of energy in passive absorption.
(4) transpiration pull is a driving force and water moves depending upon concentration gradient. Water is pulled upwards.
(5) it ocurs during daytime when there is: active transpiration
(6) Active absorption ocurs usually during night time as due to closure of stomata transpiration stops.
(7) Water absorption is against D.P.D. gradient, A.T.P erergy is required which is available from respiration.
(8) Active absorption may be osmotic or non- osmotic type.
(9) For osmotic absorption root pressure has a role.